What Was Myrtle McGraw's Purpose in Doing the "Pin-Pricking" Study

Multiple Choice

What was Myrtle McGraw's purpose in doing the "pin-pricking" study with infants?

A) she wanted to study physiological maturation in the infants
B) she wished to determine if the infants would habituate to the pin pricks and not notice them
C) she was studying fear conditioning, but using better controls than Watson
D) she was examining which parts of the body were most sensitive to skin punctures